. happening now. another top commander in a widening scandal swirling aroundgeneraldavidpetraeus. johnallen is now the subject of a pentagon investigation. it centers around hundreds, possibly thousands of e-mails sent to this woman. details of where she fits into an increasingly tangled web of relationships. i'll talk about all of this with the chair of the senate intelligence committee. dianne feinstein says it is like something off the front page of a tab roid mloid magazine and s demanding answers. i'm wolf blitzer and you're in "the situation room." >>> we begin with stunning twists in the scandal that brought down the head of the cia, general david petraeus. another u.s. general is caught in the same tangled web. john allen, top commander in afghanistan, is being investigated by the pentagon for allegedly sending inappropriate e-mails to a married woman, the same woman whose complaint of threatening e-mails from general petraeus' lover cracked the scandal wide open. barbara starr is trying to sort this out for us. it is rather complicated, what's the latest you're getting? >> it